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YouTube Dynamic Web Fullscreen

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YouTube Dynamic Web Fullscreen

youtube-dynamic-web-fullscreen

Resize YouTube video to fill browser window while preserving aspect ratio.

Firefox Add-ons
Version
1.6
Version published
Created

Maximize your viewing experience on YouTube with a single click.

YouTube Dynamic Web Fullscreen allows you to force the video player to fill the entire browser window without entering the traditional full-screen mode. This is perfect for multitasking with "picture-in-picture" style viewing or maximizing screen real estate on ultra-wide monitors.

Key Features:

  • True Window Fill: The video resizes to fit your browser window exactly (100% width and height).
  • Aspect Ratio Safe: Automatically adds black bars (letterboxing) so the video never stretches or distorts.
  • Distraction Free: Instantly hides the comments, sidebar, title, and top gradient for a clean, cinema-like view.
  • Smart "Always-On-Top": Uses advanced layering to ensure the video stays above all other YouTube elements.
  • Zero Data Collection: This extension runs locally and collects absolutely no user data.

How to use:

  • Open any YouTube video.
  • Click the extension icon.
  • The video will expand to fill the window.
  • Click again to return to normal view.

Categories

appearance
photos-music-videos
tabs

FAQs

Package last updated on 21 Jan 2026

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